Steel box girder temporary supporting structure for bridge construction

Abstract

The utility model provides a temporary supporting structure of a steel box girder for bridge construction, which comprises a square concrete foundation, a steel box girder and a steel box girder, the four steel pipe columns are arranged on the concrete foundation and are distributed in a square shape; the two distribution beams are arranged at the top ends of the four steel pipe columns; the horizontal supports are arranged in two layers and are arranged between every two of the four steel pipe columns; the first inclined supports are arranged among the four steel pipe columns; the second inclined support is arranged between the end of the distribution beam and the steel pipe column; the four top connectors are vertically arranged between the two distribution beams respectively; the triangular supports are arranged on the two sides of the upper surface of the distribution beam. And the protective net is arranged at the edge position of the upper surface of the distribution beam. Through the combined action of the horizontal support, the first inclined support, the second inclined support and the top connection and the assistance of the triangular support, the stability of the whole temporary support structure is improved, and accurate support is provided for the steel box girder.

Description

Technical Field

[0001] The utility model belongs to the field of support structures, and particularly relates to a temporary support structure for a steel box girder in bridge construction. Background Art

[0002] In the construction of steel box girders, the bracket method is adopted. Each span of the steel box girder is segmented, and the unit segments are prefabricated in the factory and transported to the construction site by road; and they are hoisted in place at the bridge position by a 300T truck crane, and the transverse circumferential welds of the steel box girder hoisting segments are butt-welded. The existing temporary support structure cannot ensure its horizontal stability and accurate positioning. Content of the Utility Model

[0003] An object of the utility model is to provide a temporary support structure for a steel box girder in bridge construction, and provide at least the advantages described hereinafter.

[0004] Another object of the utility model is to provide a temporary support structure for a steel box girder in bridge construction. Through the combined action of horizontal supports, first diagonal supports and second diagonal supports and top connections, and with the assistance of triangular brackets, the stability of the entire temporary support structure is improved, and accurate support is provided for the steel box girder.

[0005] The technical solution of the utility model is as follows:

[0006] A temporary support structure for a steel box girder in bridge construction, which includes:

[0007] A concrete foundation, which is square;

[0008] Four steel pipe columns, which are arranged on the concrete foundation and distributed in a square;

[0009] Two distribution beams, which are arranged at the tops of the four steel pipe columns;

[0010] Horizontal supports, which are arranged in two layers and between every two of the four steel pipe columns;

[0011] First diagonal supports, which are arranged between the four steel pipe columns;

[0012] Second diagonal supports, which are arranged between the ends of the distribution beams and the steel pipe columns;

[0013] Four top connections, which are respectively vertically arranged between the two distribution beams;

[0014] Triangular brackets, which are arranged at both sides of the upper surface of the distribution beams;

[0015] And a protective net, which is arranged at the edge position of the upper surface of the distribution beams.

[0016] Preferably, in the temporary support structure of the steel box girder for bridge construction,

[0017] the diameter of the steel pipe column is 450 mm;

[0018] the wall thickness of the steel pipe column is 8 mm.

[0019] Preferably, in the temporary support structure of the steel box girder for bridge construction, the distribution beam is an I-beam.

[0020] Preferably, in the temporary support structure of the steel box girder for bridge construction, the horizontal support, the first inclined support, the second inclined support and the four top connections are all channel steels.

[0021] Preferably, in the temporary support structure of the steel box girder for bridge construction, the distance between the steel pipe columns is 3000 mm.

[0022] Preferably, in the temporary support structure of the steel box girder for bridge construction, the protective net includes:

[0023] a horizontal telescopic rod, the head end of which is fixed to the upper surface of the distribution beam;

[0024] an inclined telescopic rod, the head end of which is hinged to the lower surface of the distribution beam and the end is hinged to the end of the horizontal fixing plate;

[0025] a protective net body, which is vertically arranged at the edge position of the end of the horizontal telescopic rod.

[0026] Preferably, in the temporary support structure of the steel box girder for bridge construction, the protective net body includes:

[0027] two oppositely arranged columns, with sliding grooves formed on their inner sides;

[0028] a coil spring, one end of which is fixed to the end of the horizontal telescopic rod;

[0029] and a metal net, which has convex strips on both sides to cooperate with the sliding grooves, and the bottom edge of the metal net is fixed to the free end of the coil spring;

[0030] wherein; fixing holes are provided on both the sliding groove and the convex strip, and a fixing pin passes through the fixing hole to fix the metal net.

[0031] The utility model has the following beneficial effects:

[0032] The horizontal support, the first inclined support, the second inclined support and the top connection can firmly connect the steel pipe column and the distribution beam, improving the overall stability;

[0033] The triangular bracket and the protective net can accurately support the steel box girder.

[0034] Other advantages, objects and features of the present utility model will be partially reflected by the following description, and partially will also be understood by those skilled in the art through the research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic structural diagram of an embodiment of the steel box girder temporary support structure for bridge construction provided by the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] The following further describes the present utility model in detail with reference to the drawings, so that those skilled in the art can implement it according to the description in the specification.

[0037] It should be understood that the terms such as "having", "comprising" and "including" used herein do not exclude the presence or addition of one or more other elements or their combinations.

[0038] As Figure 1 shown, the present utility model provides a steel box girder temporary support structure for bridge construction, which includes:

[0039] A concrete foundation 1, which is square with dimensions of 4500mm × 4500mm × 800mm;

[0040] Four steel pipe columns 2, which are arranged on the concrete foundation 1 and distributed in a square;

[0041] Two distribution beams 3, which are arranged at the tops of the four steel pipe columns 2;

[0042] A horizontal support 4, which is arranged in two layers and between every two of the four steel pipe columns 2;

[0043] A first diagonal support 5, which is arranged between the four steel pipe columns 2;

[0044] A second diagonal support 6, which is arranged between the end of the distribution beam 3 and the steel pipe column 2;

[0045] Four top connections 7, which are respectively vertically arranged between the two distribution beams 3;

[0046] A triangular bracket 8, which is arranged at both sides of the upper surface of the distribution beam 3;

[0047] And a protective net 9, which is arranged at the edge of the upper surface of the distribution beam 3.

[0048] In an embodiment of the steel box girder temporary support structure for bridge construction provided by the present utility model,

[0049] The diameter of the steel pipe column 2 is 450mm;

[0050] The wall thickness of the steel pipe column 2 is 8 mm.

[0051] In an embodiment of the steel box girder temporary support structure for bridge construction provided by the present utility model, the distribution beam 3 is an I-beam.

[0052] In an embodiment of the steel box girder temporary support structure for bridge construction provided by the present utility model, the horizontal support 4, the first inclined support 5, the second inclined support 6 and the four top connections 7 are all channel steels.

[0053] In an embodiment of the steel box girder temporary support structure for bridge construction provided by the present utility model, the distance between the steel pipe columns 2 is 3000 mm.

[0054] In an embodiment of the steel box girder temporary support structure for bridge construction provided by the present utility model, the protective net 9 includes:

[0055] A horizontal telescopic rod, the head end of which is fixed to the upper surface of the distribution beam;

[0056] An inclined telescopic rod, the head end of which is hinged to the lower surface of the distribution beam, and the end is hinged to the end of the horizontal fixing plate;

[0057] A protective net body, which is vertically arranged at the end edge position of the horizontal telescopic rod.

[0058] In this way, the entire protective net can be extended or shortened outward or inward in the horizontal direction to meet different protection requirements.

[0059] In an embodiment of the steel box girder temporary support structure for bridge construction provided by the present utility model, the protective net body includes:

[0060] Two oppositely arranged columns, with chutes opened on their inner sides;

[0061] A coil spring, one end of which is fixed to the end of the horizontal telescopic rod;

[0062] And a metal net, with convex strips on both sides thereof cooperating with the chutes, and the bottom edge of the metal net is fixed to the free end of the coil spring;

[0063] Wherein; fixing holes are provided on both the chutes and the convex strips, and a fixing pin passes through the fixing holes to fix the metal net.

[0064] In this way, the height of the protective net body can be adjusted to achieve different protection effects.

[0065] Although the embodiments of the present utility model have been disclosed as above, it is not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present utility model is not limited to specific details.

Claims

1. Temporary support structure of steel box beam for bridge construction, characterized in that: include: A concrete foundation, which is square; Four steel pipe columns, which are arranged on the concrete foundation and distributed in a square shape; two distribution beams, which are arranged at the top ends of the four steel pipe columns; A horizontal support is provided in two layers and is arranged between two of the four steel pipe columns; A first oblique support, which is arranged between the four steel pipe columns; A second oblique support, which is arranged between the end of the distribution beam and the steel pipe column; Four top connections, which are respectively vertically arranged between two of the distribution beams; Triangular brackets are arranged on both sides of the upper surface of the distribution beam; and a protective net, which is arranged at an edge position of an upper surface of the distribution beam.

2. The temporary supporting structure of steel box beam for bridge construction according to claim 1, characterized in that: The diameter of the steel pipe column is 450 mm; The wall thickness of the steel pipe column is 8 mm.

3. The temporary supporting structure of steel box beam for bridge construction as claimed in claim 2, characterized in that: The distribution beam is an I-beam.

4. The temporary supporting structure of steel box beam for bridge construction as claimed in claim 3, characterized in that: The horizontal support, the first oblique support, the second oblique support and the four top connections are all channel steels.

5. The temporary supporting structure of steel box beam for bridge construction as claimed in claim 4, characterized in that: The distance between the steel pipe columns is 3000 mm.

6. The temporary supporting structure of steel box beam for bridge construction as claimed in claim 5, characterized in that: The protective net comprises: A horizontal telescopic rod, the head end of which is fixed to the upper surface of the distribution beam; An inclined telescopic rod, the head end of which is hinged to the lower surface of the distribution beam, and the end of which is hinged to the end of the horizontal telescopic rod; The protective net body is vertically arranged at the end edge position of the horizontal telescopic rod.

7. The temporary supporting structure of steel box beam for bridge construction as claimed in claim 6, characterized in that: The protective net body comprises: Two oppositely arranged upright posts, with sliding grooves formed on their inner sides; A coil spring, one end of which is fixed to the end of the horizontal telescopic rod; and a metal mesh, with convex strips on both sides thereof cooperating with the slide groove, and the bottom side edge of the metal mesh being fixed to the free end of the coil spring; Wherein; the slide groove and the convex strip are both provided with fixing holes, and a fixing pin passes through the fixing hole to fix the metal mesh.

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